At its website, the WHO offers this advice regarding giving experimental coronavirus vaccines, some of which are not even vaccines under the normal meaning of the term, to children:
Children should not be vaccinated for the moment.
There is not yet enough evidence on the use of vaccines against COVID-19 in children to make recommendations for children to be vaccinated against COVID-19.
Children and adolescents tend to have milder disease compared to adults.
However, children should continue to have the recommended childhood vaccines.